The Mesa Miners are an independent professional baseball team that is based in Mesa, Arizona. They began as a member of the Arizona Division of the now-defunct Golden Baseball League in 2005. The original team became known as the Reno Silver Sox in 2006, and then the Tucson Toros in 2009, but the league could bring the Miners back as an expansion team should they decide to do so.

They returned to play in 2011 after a six-year absence as a member of the Arizona Summer League, one of two instructional leagues affiliated with the North American League, which is not affiliated with either Major League Baseball or Minor League Baseball.

The Miners started as one of eight charter teams in the GBL along with the Chico Outlaws, Fullerton Flyers, Long Beach Armada and San Diego Surf Dawgs in California, the Surprise Fightin' Falcons and Yuma Scorpions in Arizona and a traveling team, the Japan Samurai Bears that began play in May 2005. All teams were league-owned and the team names and logos also belong to the league. In their one year of play, the team won the first ever GBL Arizona Division title and played in the Championship Game against the Surf Dawgs.

Unfortunately, the Miners had the league's worst overall attendance, (which is somewhat dubious because of the highly inflated attendance numbers that the Fightin' Falcons allegedly received) and was dropped from the Golden Baseball League in November 2005. The league dropped Surprise largely due to not having another team in central Arizona and to give the league an even number of six teams instead of seven. The low attendance numbers both teams received were due largely to the fact that many of their home games were played in the scorching afternoon heat of central Arizona. The Miners roster and coaching staff were carried over to the league's new Reno Silver Sox team, which won the League Championship in 2006. The franchise has since been purchased and relocated to Tucson, Arizona, and has been renamed the Tucson Toros.

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